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      <regStreet1>6300 BEE CAVE ROAD</regStreet1>
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      <regStateConditional regCountry="US" regState="US-TX"/>
      <regZipOrPostalCode>78746</regZipOrPostalCode>
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        <fairValLevel>1</fairValLevel>
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        <name>Emerging Markets Core Equity 2 Portfolio</name>
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        <fairValLevel>1</fairValLevel>
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        <name>DFA Two-Year Global Fixed Income Portfolio</name>
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        <fairValLevel>1</fairValLevel>
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        <name>DFA Short-Term Extended Quality Portfolio</name>
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        <fairValLevel>1</fairValLevel>
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        <fairValLevel>1</fairValLevel>
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        <fairValLevel>1</fairValLevel>
        <securityLending>
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    </invstOrSecs>
    <explntrNotes>
      <explntrNote note="Monthly returns presented in Item B.5(a) have been calculated without deducting any applicable sales loads or redemption fees." noteItem="B.5.a"/>
    </explntrNotes>
    <signature>
      <ncom:dateSigned>2026-02-26</ncom:dateSigned>
      <ncom:nameOfApplicant>DFA INVESTMENT DIMENSIONS GROUP INC</ncom:nameOfApplicant>
      <ncom:signature>Randy Olson</ncom:signature>
      <ncom:signerName>Randy Olson</ncom:signerName>
      <ncom:title>Vice President</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
